merges r21571 from trunk into ruby_1_9_1.

* ruby.c (process_options): decrement parse_in_eval to recognize
  parsing main or normal eval script.
* compile.c (rb_parse_in_main): return 1 if parsing main script.
  (if parse_in_eval is negative value, it means main script)
* parse.y (yycompile0): check rb_parse_in_main() to accumulate
  script text.  Bug #848 [ruby-core:20450]

git-svn-id: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_9_1@21576 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 2 deletions

diff --git a/ruby.c b/ruby.c
index 92d2a6217..03daaf5c6 100644
--- a/ruby.c
+++ b/ruby.c
@@ -1319,10 +1319,10 @@ process_options(VALUE arg)
     }
 
 #define PREPARE_PARSE_MAIN(expr) do { \
-    th->parse_in_eval++; \
+    th->parse_in_eval--; \
     th->base_block = &env->block; \
     expr; \
-    th->parse_in_eval--; \
+    th->parse_in_eval++; \
     th->base_block = 0; \
 } while (0)